[Mp4-tech] h264 inter prediction question

[Victor lyamtsev]

I mean coding IDR frames with lower PSNR as speed vs. quality tradeoff...
Would that reduce size of IDR slices ?
Does anyone currently working on media streaming standards specifically for
MANETs?
Thank you,
-V.
On 5/1/08, Gary Sullivan <garysull windows.microsoft.com> wrote:
>
>  Yes, certainly (assuming that I understand the question properly).
>
> -G.
>  ------------------------------
> *From:* mp4-tech-bounces lists.mpegif.org [
> mp4-tech-bounces lists.mpegif.org] On Behalf Of Victor lyamtsev [
> vlyamtsev gmail.com]
> *Sent:* Wednesday, April 30, 2024 6:45 PM
> *To:* mp4-tech lists.mpegif.org
> *Subject:* Re: [Mp4-tech] h264 inter prediction question
>
>
>  Would it be possible to reduce size of IDR slices with more "noisy"
> intra- frame encoding?
> Thank you again,
> -V
>
> On 4/26/08, Gary Sullivan <garysull windows.microsoft.com> wrote:
> >
> >  Victor,
> >
> > One way the break an IDR frame across multiple packets is to segment the
> > frame into slices and use one packet per slice.
> >
> > IDR picture are most typically constructed of "I" slices, as opposed to
> > "SI" slices.  Those are the only two slice types allowed in an IDR picture.
> >
> > When you refer to predicting slices within IDR frame, I'm not sure I
> > really understand the question.  If you're referring to prediction from
> > within the same slice, there is such prediction that occurs.  If you're
> > referring to prediction from other pictures, that is sort of the opposite of
> > the purpose of an IDR frame.  If you're referring to prediction from one
> > slice to another within the same picture, that is sort of the opposite of
> > the purpose of a slice.
> >
> > There is something called memory_management_control_operation equal to 5
> > that you might want to study.  It has an effect that is somewhat of a hybrid
> > of IDR-like picture buffer state reset and inter-picture prediction
> > functionality.
> >
> > Best of luck in your efforts,
> >
> > Gary Sullivan
> >
> >  ------------------------------
> > *From:* mp4-tech-bounces lists.mpegif.org [mailto:
> > mp4-tech-bounces lists.mpegif.org] *On Behalf Of *Victor lyamtsev
> > *Sent:* Thursday, April 24, 2024 7:54 AM
> > *To:* mp4-tech lists.mpegif.org
> > *Subject:* [Mp4-tech] h264 inter prediction question
> >
> >
> >  Hello All,
> >
> > Can I use inter coding to predict slices within IDR frame? Or, can it
> > only have "SI" slices within it?
> > I am trying to run h264 stream over bandwidth constrained wireless
> > network. Is there something I can use to break IDR frames over few network
> > packets to make the stream less sensitive to packet loss?
> > Thank you,
> > - V.
> >
> >
>
>
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